3.13 Operation Of External Control/Orp Control Board; Figure 17. Movable Orp Jumper J14 - Zodiac Pool Systems Nature2 Fusion soft Installation And Operation Manual

3.13 Operation of External Control/ORP Control Board

An external device such as an ORP (Oxidation Reduction Potential) controller supplying 24 Volts AC can be used
to control the output of the chlorinator. The chlorinator control board can be set up in the fi eld to operate in two (2)
different modes. The mode of operation is determined by the position of a movable jumper J14. See Figure 17 for
location.
POS-1 Wait at least one (1) minute after applying power. See note 1.
With J14 jumper set to POS-1 and no voltage applied to the ORP 24 VAC connector J15, the chlorinator
works normally displaying the production rate of 0% to 100% on the front of the power supply.
When 24 Volts AC is applied to the ORP 24 VAC inputs, chlorine production will be disabled.
The front panel of the power supply will then fl ash "EC" (external control). Once the 24 Volts AC input is
removed the chlorine generator will return to normal operation. The "EC" will be replaced with the current
production setting of 0% to 100%.
POS-2 Wait at least one (1) minute after applying power. See note 1.
Placing the jumper in POS-2 allows the chlorinator to operate in the opposite way to POS-1. With 24
Volts AC applied to the ORP 24 VAC inputs, chlorine production will be enabled. The front panel of the
power supply will display a production rate of 0% to 100%. When the 24 Volts AC is removed the chlorine
generator will fl ash "EC" every few seconds and chlorine production is disabled.
SUMMARY
POSITION OF J14
POS-1 (default)
POS-2
Note 1 The unit samples the external control/ORP settings at the instant power is applied to the chlorinator and will
not respond to any changes during the fi rst minute of operation. The unit may appear to be STUCK IN or
STUCK OUT of "EC" mode. Wait several minutes until the unit has warmed up to verify the changes made to
external control set-up.
Note 2 Unlike the previous production models with ORP control, multiple chlorinators can be linked together to be
controlled with one ORP controller without the use of external relays and transformers. Contact the factory for
more information.
ORP
Connector J15
R0474300
ORP Jumper J14
Figure 17. Movable ORP Jumper J14
Nature Fusion Soft Installation and Operation Manual
2®
24 VAC
Unit OFF, displays EC
Unit ON, displays 0-100%
J 2
0 VAC
Unit ON, displays 0-100%
Unit OFF, displays EC
Wires to the
external
ORP Controller
J 2
Chlorine Generator Power
Page 25
Interface Board